Home / Routes / SEA–KEF Flight Route
Seattle → Reykjavik Flights from Seattle (SEA) to Reykjavik (KEF)
Timezone shift +8h Direction eastbound Flight time 7h 40m Distance 5,808 km Direct 2 airlines
Overview Airlines(15) Awards(1) Seasonal
Alliances Star Alliance SkyTeam Oneworld
Classes Economy Premium Economy Business First
Schedule su mo tu we th fr sa
Aircraft Airbus A321neo
Boeing 737 MAX 8
Boeing 757-200 (winglets)
Seattle to Reykjavik Flights Flights from Seattle to Reykjavik are operated 15 times. Departure times vary between 14:35 and 23:25. You can fly in Y and W and J and F. The flight distance is 5,808 km (3,609 miles).
Arrival Windows Best times to arrive for faster recovery
7AM–7PM
Morning light helps you stay awake longer
9PM–5AM
Arriving during your body's sleep window makes adjustment harder
The difference: choosing the right arrival window can save 1–2+ days of recovery time.
Departure Timing Best hours to depart for jetlag recovery
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Night (00–05) Morning (06–11) Afternoon (12–17) Evening (18–23)
Arrival Strategy for Reykjavik How to manage jetlag based on arrival time
Upon morning arrival, immediately engage with natural light and stay active. Consider a light walk or outdoor activity to help reset your internal clock and combat early arrival fatigue.
Afternoon arrivals should strategically time a short 20-30 minute nap to refresh without disrupting nighttime sleep, followed by mild outdoor exposure to reinforce wakefulness.
For evening arrivals, minimize bright screens, stick to a consistent sleep schedule, and use blackout curtains to manage Iceland's extended daylight and support immediate sleep adaptation.
Best Time to Visit Reykjavik Monthly climate overview
Airport Recovery Facilities Jetlag-friendly amenities at each airport
Top Airlines Nonstop service on this route
14:35 Airbus A321neo 7h 40m
15:40 Boeing 737 MAX 8 7h 40m
15:40 Boeing 737 MAX 8 7h 40m
Frequently Asked Questions How many flights per week from Seattle to Reykjavik?
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Jetlag Score 40
Challenging K2 composite score
Recovery Estimate Conservative 9.0 days
Aggressive 3.0 days
Direction eastbound
Route Facts Origin SEA
Destination KEF
Distance 5,808 km
Timezone Shift +8h
Direct Airlines 2
Currency Icelandic króna (ISK).
Airport Amenities SEA
Quiet Zones Lounge Beds
Search Flights Compare SEA → KEF flights ranked by jetlag score
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